Description

4-Amino-4′-nitrostilbene-2,2′-disulfonic acid (CAS: 119-72-2) is a high-purity organic compound with the molecular formula C₁₄H₁₂N₂O₈S₂. This stilbene derivative features both amino and nitro functional groups, along with sulfonic acid moieties, making it a versatile intermediate in synthetic chemistry and industrial applications. Its structure enables reactivity in coupling reactions, dye synthesis, and as a precursor for fluorescent probes. The compound is supplied as a fine powder with ≥80% technical purity, ensuring consistency for research and manufacturing processes. Store in a cool, dry place away from light to maintain stability.

Properties

• CAS Number: 119-72-2
• Complexity: 747
• IUPAC Name: 5-amino-2-[(E)-2-(4-nitro-2-sulfo-phenyl)vinyl]benzenesulfonic acid
• InChI: InChI=1S/C14H12N2O8S2/c15-11-5-3-9(13(7-11)25(19,20)21)1-2-10-4-6-12(16(17)18)8-14(10)26(22,23)24/h1-8H,15H2,(H,19,20,21)(H,22,23,24)/b2-1+
• InChI Key: GHBWBMDGBCKAQU-OWOJBTEDSA-N
• Exact Mass: 400.00350769
• Molecular Formula: C14H12N2O8S2
• Molecular Weight: 400.4
• SMILES: C1=CC(=C(C=C1N)S(=O)(=O)O)/C=C/C2=C(C=C(C=C2)[N+](=O)[O-])S(=O)(=O)O
• Topological: 197
• Monoisotopic Mass: 400.00350769
• Synonyms: 119-72-2, 4-Nitro-4′-aminostilbene-2,2′-disulfonic acid, 4-Amino-4′-nitrostilbene-2,2′-disulfonic acid, Benzenesulfonic acid, 5-amino-2-(2-(4-nitro-2-sulfophenyl)ethenyl)-, P8NM345BG9, Benzenesulfonic acid, 5-amino-2-[2-(4-nitro-2-sulfophenyl)ethenyl]-, 5-Amino-2-(2-(4-nitro-2-sulphophenyl)vinyl)benzenesulphonic acid, 4-amino-4′-nitrostilbene-2,2′-disulphonic acid, 4-AMINO-4′-NITRO-2,2′-STILBENEDISULPHONIC ACID, 4-NITRO-4′-AMINOSTILBENE-2,2′-DISULPHONIC ACID, 2,2′-STILBENEDISULPHONIC ACID, 4-AMINO-4′-NITRO-, 5-Amino-2-[2-(4-nitro-2-sulphophenyl)vinyl]benzenesulphonic acid, 5-AMINO-2-(2-(4-NITRO-2-SULPHOPHENYL)VINYL)BENZENESULFONIC ACID, BENZENESULPHONIC ACID, 5-AMINO-2-(2-(4-NITRO-2-SULFOPHENYL)ETHENYL)-, DTXSID6059493, DTXCID4033471, 4-Amino-4′-nitro-2,2′-stilbenedisulfonic acid, 5-amino-2-[(E)-2-(4-nitro-2-sulfophenyl)ethenyl]benzenesulfonic acid, 2,2′-Stilbenedisulfonic acid, 4-amino-4′-nitro-, Kyselina 4-amino-4′-nitrostilben-2,2′-disulfonova, Kyselina 4-nitro-4′-aminostilben-2,2′-disulfonova, EINECS 204-346-5, BRN 3498785, MFCD00035915, NSC659760, Kyselina 4-amino-4′-nitrostilben-2,2′-disulfonova [Czech], Kyselina 4-nitro-4′-aminostilben-2,2′-disulfonova [Czech], 6634-82-8, UNII-P8NM345BG9, 0-14-00-00798 (Beilstein Handbook Reference), SCHEMBL1536241, GHBWBMDGBCKAQU-OWOJBTEDSA-N, 5-amino-2-[(E)-2-(4-nitro-2-sulfo-phenyl)vinyl]benzenesulfonic acid, AKOS024387392, DB-229316, CS-0206956, ST51040010, 4-amino-4′-nitrostilbene-2,2-disulfonic acid, D88105, 4-Nitro-4-aminostilbene-2,2-disulfonic acid disodium salt, 4-Amino-4′-nitrostilbene-2,2′-disulfonic acid, tech. 80%, 5-amino-2-[2-(4-nitro-2-sulfophenyl)ethenyl]benzenesulfonic acid, 2-[(1E)-2-(4-nitro-2-sulfophenyl)vinyl]-5-aminobenzenesulfonic acid, 5-Amino-2-[(e)-2-(4-nitro-2-sulfophenyl)vinyl]benzenesulfonic acid, Benzenesulfonic acid, 5-amino-2-[(E)-2-(4-nitro-2-sulfophenyl)ethenyl]-

4-Amino-4′-nitrostilbene-2,2′-disulfonic acid is widely used as a key intermediate in the synthesis of optical brighteners and fluorescent dyes. It serves as a precursor for stilbene-based compounds in analytical chemistry and materials science. Researchers leverage its sulfonic acid groups for solubility enhancement in aqueous systems. The nitro and amino functionalities enable further derivatization for specialized applications.

Safety and Hazards

GHS Hazard Statements

• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

Precautionary Statements

• P264+P265, P280, P305+P351+P338, and P337+P317

Hazard Classes and Categories

• Eye Irrit. 2 (100%)

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